Aera FC-7700C Switch

The Aera FC-7700C is a calibrated mass flow controller (MFC) from Aera designed for precise gas metering in semiconductor processing, analytical instruments, and gas-delivery systems. It typically operates from a 15 VDC supply and draws about 25–180 mA, with a full-scale flow range specified as 10 SCCM to 5 SLM, and there are variants such as an AR version rated at 100 SCCM for Argon applications. The unit weighs 1.65 lb (approximately 0.75 kg). Some catalog listings indicate the FC-7700C has been discontinued by the manufacturer, so current availability may be limited; when found, it is commonly described as a mass flow controller rather than a simple switch. In practice, FC-7700C modules are used in configurations requiring tight gas control, including dual‑MFC setups in analytical rigs where analyte and carrier gas flows are managed in concert.